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Most malicious documents (macros) are tiny. However, "bloating" a file to over 100 MB is a known technique called .

Use a trusted, updated antivirus to run a "Full System Scan." download/view now ( 156.07 MB )

From a different device, change your primary email and banking passwords. Most malicious documents (macros) are tiny

Attackers use specific tactics in this subject line to bypass your natural skepticism: "Invoice" or "Contract")

It doesn't say what the file is (e.g., "Invoice" or "Contract"), which triggers curiosity.